Aymara mythology

thumb|250px|Ushnu in Vilcashuamán, Ayacucho, Peru. In the Inca Empire the ushnu (other spelling usnu, sometimes usñu) was an altar for cults to the deities, a throne for the Sapa Inca (emperor), an elevated place for judgment and a reviewing stand of military command. In several cases the ushnu may have been used as a solar observatory. Ushnus mark the center of plazas (main squares) of the Inca administrative centers all along the highland path of the Inca road system.